Investigation of the saturated vapor pressure of the Cu2Se and CuInSe2 compounds

Abstract

The saturated vapor pressure of the Cu 2 Se and CuInSe 2 compounds is investigated using the gravimetric method in the temperature ranges 1282-1450 and 1173-1423 K, respectively. It is demonstrated that, in the case of congruent vaporization, the temperature dependences of the saturated vapor pressure of the Cu 2 Se and CuInSe 2 compounds in the temperature ranges under investigation are adequately described by the equation log P = -A / T + B . The enthalpy and entropy of vaporization are estimated for both compounds.